CN102196344B - Pickup device and electronic device using same - Google Patents
Pickup device and electronic device using same Download PDFInfo
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- CN102196344B CN102196344B CN201010126908.9A CN201010126908A CN102196344B CN 102196344 B CN102196344 B CN 102196344B CN 201010126908 A CN201010126908 A CN 201010126908A CN 102196344 B CN102196344 B CN 102196344B
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- piezoelectric element
- equipment
- sound pick
- accommodating body
- vibration
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Abstract
The invention discloses a pickup device, which comprises an accommodation body, a first piezoelectric element, a second piezoelectric element and a circuit unit, wherein the accommodation body is provided with a pickup opening; the first piezoelectric element is arranged in the accommodation body, senses the vibration of high frequency acoustic waves and performs conversion to output a signal; the second piezoelectric element is arranged in the accommodation body, senses the vibration of low frequency acoustic waves and performs the conversion to output the signal; and the circuit unit is electrically connected with the first and second piezoelectric elements to receive the signals from the first and second piezoelectric elements, process the received signals and generate an acoustic signal. Therefore, the pickup device has relatively higher sensing flexibility and relatively wider audio frequency, and can improve the tonal quality.
Description
Technical field
The present invention relates to a kind of sound pick up equipment and use the electronic installation of this sound pick up equipment, particularly a kind of piezoelectric type (piezoelectric) sound pick up equipment and use the electronic installation of this sound pick up equipment.
Background technology
Sound pick up equipment has become in modern's daily life one of articles for use that the most often use, such as mobile communication equipment, recording pen, have the music player etc. of sound-recording function, all needs the second best in quality sound pick up equipment to complete reception external sound.
Common sound pick up equipment comprises Electret Condencer Microphone and piezoelectric microphone, in traditional piezoelectric microphone, mostly utilize a vibrating diaphragm or elastic material to be attached on human body, acoustic pressure when experiencing human body sounding, and acoustic pressure is delivered to piezoelectric, the structure that makes piezoelectric changes because of pressure, then produces voltage for processing.
Traditional piezoelectric microphone is to utilize vibrating diaphragm or elastic material (as sponge or spring) sensing acoustic vibration, and this type of vibrating diaphragm or elastic material itself can sponge the vibration of the acoustic pressure of part, make the trickleer high frequency sound wave signal of extent of vibration originally be easy to produce distortion; And also can form a low-frequency resonance phenomenon, low frequency echo can be strengthened especially, cause serious echo distortion, therefore, the sensing sensitivity to sound wave and pickup effect all need further improvement.
Summary of the invention
In view of above problem, main purpose of the present invention is for providing a kind of sound pick up equipment and using the electronic installation of this sound pick up equipment, and its structural design has good sensing sensitivity and broader audio frequency, can promote tonequality; And sound pick up equipment small volume, is more easily installed on other electronic installation, increase use function and the convenience of electronic installation.
In order to realize above-mentioned object, the invention provides a kind of sound pick up equipment, comprising: an accommodating body, it has a pickup mouth; One first piezoelectricity sub-element, it is arranged in this accommodating body, changes output one signal with the vibration of sensing high frequency sound wave; One second piezoelectric element, it is arranged in this accommodating body, and the length of this second piezoelectric element, with respect to this first piezoelectric element is long, is changed output one signal with the vibration of sensing low-frequency sound wave; And a circuit unit, it is electrically connected on this first piezoelectric element and this second piezoelectric element, to receive the signal of this first piezoelectric element and this second piezoelectric element, and processes and produces a voice signal.
Sound pick up equipment of the present invention, wherein this accommodating body is metal hollow tubular body, and this accommodating body has an accommodation space, and this pickup mouth is communicated with this accommodation space and is positioned at one end of this accommodating body.
Sound pick up equipment of the present invention, wherein this circuit unit is located in this accommodating body one end with respect to this pickup mouth, and one end of this first piezoelectric element and this second piezoelectric element is fixedly arranged on respectively on this circuit unit.
Sound pick up equipment of the present invention, wherein this circuit unit is located at outside this accommodating body one end with respect to this pickup mouth, this accommodating body is provided with a fixed structure in the one end with respect to this pickup mouth, and one end of this first piezoelectric element and this second piezoelectric element is fixedly arranged on respectively on this fixed structure.
Sound pick up equipment of the present invention, wherein this first piezoelectric element and this second piezoelectric element respectively have a vibration end, and this two vibration end is towards this pickup mouth.
Sound pick up equipment of the present invention, wherein the vibration end of this first piezoelectric element and this second piezoelectric element is respectively provided with a vibration amplification part.
Sound pick up equipment of the present invention, wherein the material of this first piezoelectric element and this second piezoelectric element is piezoelectric ceramic, piezoelectric crystal or piezoelectric membrane.
Sound pick up equipment of the present invention, is wherein further provided with a strutting piece in this first piezoelectric element and this second piezoelectric element.
Sound pick up equipment of the present invention, wherein this first piezoelectric element and this second piezoelectric element are cylinder or plates.
Sound pick up equipment of the present invention, wherein this sound pick up equipment is contact or contactless sound pick up equipment.
Sound pick up equipment of the present invention, wherein this first piezoelectric element and this second piezoelectric element are bending extension.
The present invention also provides a kind of electronic installation that uses sound pick up equipment, and this electronic installation is provided with sound pick up equipment of the present invention, and is stored or export after receiving the voice signal that this sound pick up equipment produces.
The present invention provides a sound pick up equipment again, comprising: an accommodating body, it has a pickup mouth; One piezoelectric element, it is arranged in this accommodating body, and this piezoelectric element is bending and extends, and changes output one signal with the vibration of sensing high and low frequency sound wave; And a circuit unit, it is electrically connected on this piezoelectric element, to receive the signal of this piezoelectric element, and processes and produces a voice signal.
The present invention has following useful effect:
1, in this accommodating body, be provided with the first piezoelectric element and the second piezoelectric element, can in order to the vibration of sensing high and low frequency sound wave, converted output signal have good sensing sensitivity and broader audio frequency respectively, can promote tonequality.
2, sound pick up equipment is easy to be installed in the electronic installation with pickup demand, electronic installation is increased and use function and convenience.
Brief description of the drawings
Fig. 1 is the cross-sectional schematic of electronic installation the first embodiment of the present invention.
Fig. 2 is the cross-sectional schematic of electronic installation the second embodiment of the present invention.
Fig. 3 is the cross-sectional schematic of electronic installation of the present invention the 3rd embodiment.
Fig. 4 is the cross-sectional schematic of electronic installation of the present invention the 4th embodiment.
Fig. 5 is the cross-sectional schematic of electronic installation of the present invention the 5th embodiment.
Fig. 6 is the part cross-sectional schematic of electronic installation of the present invention the 6th embodiment.
Fig. 6 A is the part cross-sectional schematic of electronic installation of the present invention the 7th embodiment.
Fig. 7 is the part cross-sectional schematic of electronic installation of the present invention the 8th embodiment.
Fig. 8 is the part cross-sectional schematic of electronic installation of the present invention the 9th embodiment.
Fig. 9 is the calcspar that the present invention uses the electronic installation of sound pick up equipment.
Figure 10 is the schematic diagram that the present invention uses the electronic installation of sound pick up equipment.
Main element symbol description
1 sound pick up equipment
10 accommodating bodies
101 accommodation spaces
102 pickup mouths
11 first piezoelectric elements
110 vibration end
111 strutting pieces
12 second piezoelectric elements
120 vibration end
121 strutting pieces
13 circuit units
14 wires
15 vibration amplification parts
16 vibration amplification parts
17 fixed structures
2 electronic installations
21 power supply units
22 processing units
Embodiment
Refer to Fig. 1, the invention provides a kind of sound pick up equipment 1, this sound pick up equipment 1 can be contact or contactless sound pick up equipment, and taking contact sound pick up equipment as example, it can be attached or by the sounding position that is pressed in human body skin around; Contactless meaning does not contact human body.Sound pick up equipment 1 comprises: an accommodating body 10, one first piezoelectric element 11, one second piezoelectric element 12 and a circuit unit 13.
In the present embodiment, the hollow circular cylinder that this accommodating body 10 is metal material, its energising polarity is negative pole, can completely cut off outside noise and disturb.Accommodating body 10 has an accommodation space 101 and a pickup mouth 102, and this pickup mouth 102 is communicated with accommodation space 101 and is positioned at accommodating body 10 one end, in the other end of this accommodating body 10, seals with circuit unit 13.
The material of this first piezoelectric element 11 and the second piezoelectric element 12 is Sensor, piezoelectric crystal or piezoelectric membrane, piezoelectric ceramic for example: barium titanate (BaTiO
3), lead titanates (Lead titanate, PbTiO
3), lead zirconate titanate (Lead zirconate titanate, PZT) or lead zirconate titanate and silver composite (PZT/Ag composites) etc.; Piezoelectric crystal common are: lithium niobate, potassium niobate, quartz, tourmaline, sodium tartrate (Sodium tartrate), Rochelle salt (Rochelle salt) etc.; Piezoelectric membrane is for example: zinc oxide (ZnO) etc.; In addition,, in natural polymer substance and artificial synthetic polymer, also there is part to there is described piezoelectric property.
In the present embodiment, this first piezoelectric element 11 and the second piezoelectric element 12 are cylinder (but shape is not as limit), are located in accommodating body 10.One end of the first piezoelectric element 11 and the second piezoelectric element 12 is fixedly arranged on circuit unit 13, and is electrically connected on circuit unit 13 with wire 14.The other end of the first piezoelectric element 11 and the second piezoelectric element 12 respectively has a vibration end 110 and 120, and described two vibration end 110 and 120 are towards pickup mouth 102, in order to the vibration pressure of sensing sound wave.This first piezoelectric element 11 is changed output one signal in order to the vibration of sensing high frequency sound wave, and transfers signals to circuit unit 13; The length of this second piezoelectric element 12 is long compared with the first piezoelectric element 11, changes output one signal, and transfer signals to circuit unit 13 with the vibration of sensing low-frequency sound wave.
It is worth mentioning that, in the first piezoelectric element 11 and the second piezoelectric element 12, a strutting piece 111 and 121 can be further set, in order to increase support force.
This circuit unit 13 comprises electric capacity, transistor or amplifying circuit (not shown), in order to receive the signal of the first piezoelectric element 11 and the second piezoelectric element 12 conversion outputs, and process and produce a voice signal, and then can be sent to loud speaker and broadcast or be stored in (not shown) in electronic installation.
Refer to Fig. 2, the present embodiment and above-described embodiment difference are: this circuit unit 13 is located at outside accommodating body 10 one end with respect to pickup mouth 102, the one end that is provided with fixed structure 17, the first piezoelectric elements 11 and the second piezoelectric element 12 in this accommodating body 10 one end with respect to pickup mouth 102 is fixedly arranged on respectively on this fixed structure 17.
Refer to Fig. 3, the present embodiment and above-described embodiment difference are: the vibration end 110 and 120 of this first piezoelectric element 11 and the second piezoelectric element 12 is respectively equipped with a vibration amplification part 15 and 16, this vibration amplification part 15 and 16 can be the material that density is higher, formula weight is larger, for example metal, in order to increase the Oscillation Amplitude of vibration end 110 and 120, when Oscillation Amplitude larger, the signal that the first piezoelectric element 11 and the second piezoelectric element 12 are changed output is also stronger, the voice signal producing after circuit unit 13 is processed is more clear, therefore improves pickup sensitivity.
Refer to Fig. 4, the present embodiment and above-described embodiment (as shown in Figure 3) difference is: this first piezoelectric element 11 and the second piezoelectric element 12 are plates, and vibration amplification part 15 and 16 is located at respectively the relative both sides of the first piezoelectric element 11 and the relative both sides of the second piezoelectric element 12.
Refer to Fig. 5, the present embodiment and above-described embodiment (as shown in Figure 4) difference is: circuit unit 13 is located at outside accommodating body 10 one end with respect to pickup mouth 102, and accommodating body 10 is provided with fixed structure 17 in the one end with respect to pickup mouth 102.
Refer to Fig. 6, the present embodiment and above-described embodiment difference are: this first piezoelectric element 11 and the second piezoelectric element 12 are 90 degree bendings and extend, accommodating body 10 is hollow, rectangular body, makes the overall shared small volume of sound pick up equipment 1, is easier to be installed in electronic installation.
In addition, refer to Fig. 6 A, the present embodiment and above-described embodiment difference are: accommodating body 10 only arranges one and is the second piezoelectric element 12 that 90 degree bendings are extended, and changes output one signal with the vibration of sensing high and low frequency sound wave.
Refer to Fig. 7, the present embodiment and above-described embodiment (as shown in Figure 6) difference is: two vibration amplification parts 15 and 16 are located at respectively the first piezoelectric element 11 and are approached the bottom side of vibration end 110 and the top side of the second piezoelectric element 12 nearly vibration end 120.
Refer to Fig. 8, the present embodiment and above-described embodiment (as shown in Figure 7) difference is: circuit unit 13 is located at outside accommodating body 10, and the bottom of accommodating body 10 is provided with fixed structure 17.
Refer to Fig. 9 and Figure 10, the present invention separately provides a kind of electronic installation that uses sound pick up equipment, in this electronic installation 2, except being provided with above-mentioned sound pick up equipment 1, also has a power supply unit 21 and a processing unit 22.This sound pick up equipment 1 transmits voice signal to processing unit 22, produce signal though do not need extra service voltage can receive the pressure of acoustic vibration, but because electronic installation 1 has power supply unit 21, therefore also can utilize power supply unit 21 to provide extra voltage (V+) to sound pick up equipment 1, make to be sent to the voice signal of processing unit 22, the larger voltage of output under identical pressure, and the sensitivity that has improved sound pick up equipment 1.Processing unit 22 receives after voice signal, can be processed, for being stored in electronic installation 2 or outputing to other electronic installation, so that user carries out speech communication.And the circuit unit 13 of sound pick up equipment 1 can be located in the circuit board in electronic installation 2, to save the usage space in electronic installation 2.
In sum, the present invention has following beneficial effect:
1, in accommodating body 10, be provided with the second piezoelectric element 12 that the first shorter piezoelectric element 11 of a length and a length are long, the converted output signal in order to the vibration of sensing high and low frequency sound wave respectively, there is good sensing sensitivity and broader audio frequency, can promote tonequality.
2, this first piezoelectric element 11 and the second piezoelectric element 12 are 90 degree bending extensions, accommodating body 10 is hollow, rectangular body, make the overall shared small volume of sound pick up equipment 1, except can be used alone, be easier to be installed in the electronic installation 2 with pickup demand, for example be embedded in the middle of device for mobile communication, notebook computer and integrated headphone microphone, the sound of electronic installation 2 being inputted to receive user, increases and uses function and convenience.
Claims (11)
1. a sound pick up equipment, is characterized in that, comprising:
One accommodating body, it has a pickup mouth;
One first piezoelectric element, it is arranged in this accommodating body, changes output one signal with the vibration of sensing high frequency sound wave;
One second piezoelectric element, it is arranged in this accommodating body, and the length of this second piezoelectric element this first piezoelectric element is long, changes output one signal with the vibration of sensing low-frequency sound wave;
One circuit unit, it is electrically connected on this first piezoelectric element and this second piezoelectric element, to receive the signal of this first piezoelectric element and this second piezoelectric element, and processes generation one voice signal; And
One power supply unit, it is electrically connected this circuit unit, to provide an extra voltage to this circuit unit, to increase the output voltage of this voice signal, the sensitivity that improves according to this this sound pick up equipment pickup;
Wherein, this first piezoelectric element and this second piezoelectric element are bending and extend, and stacked on top of one another setting, with in the situation that this sound pick up equipment entire length is constant, increase the length of this first piezoelectric element and this second piezoelectric element, to improve the sensitivity of this sound pick up equipment pickup.
2. sound pick up equipment as claimed in claim 1, is characterized in that, this accommodating body is metal hollow tubular body, and this accommodating body has an accommodation space, and this pickup mouth is communicated with this accommodation space and is positioned at one end of this accommodating body.
3. sound pick up equipment as claimed in claim 1, is characterized in that, this circuit unit is located in this accommodating body one end with respect to this pickup mouth, and one end of this first piezoelectric element and this second piezoelectric element is fixedly arranged on respectively on this circuit unit.
4. sound pick up equipment as claimed in claim 1, it is characterized in that, this circuit unit is located at outside this accommodating body one end with respect to this pickup mouth, this accommodating body is provided with a fixed structure in the one end with respect to this pickup mouth, and one end of this first piezoelectric element and this second piezoelectric element is fixedly arranged on respectively on this fixed structure.
5. sound pick up equipment as claimed in claim 1, is characterized in that, this first piezoelectric element and this second piezoelectric element respectively have a vibration end, and this two vibration end is towards this pickup mouth.
6. sound pick up equipment as claimed in claim 5, is characterized in that, the vibration end of this first piezoelectric element and this second piezoelectric element is respectively provided with a vibration amplification part.
7. sound pick up equipment as claimed in claim 1, is characterized in that, the material of this first piezoelectric element and this second piezoelectric element is piezoelectric ceramic, piezoelectric crystal or piezoelectric membrane.
8. sound pick up equipment as claimed in claim 1, is characterized in that, in this first piezoelectric element and this second piezoelectric element, is further provided with a strutting piece.
9. sound pick up equipment as claimed in claim 1, is characterized in that, this first piezoelectric element and this second piezoelectric element are cylinder or plates.
10. sound pick up equipment as claimed in claim 1, is characterized in that, this sound pick up equipment is contact or contactless sound pick up equipment.
11. 1 kinds of electronic installations, is characterized in that, use the sound pick up equipment as described in claim 1 to 10 any one, and this sound pick up equipment is located in this electronic installation, and this electronic installation receives this voice signal for storing or output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010126908.9A CN102196344B (en) | 2010-03-04 | 2010-03-04 | Pickup device and electronic device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010126908.9A CN102196344B (en) | 2010-03-04 | 2010-03-04 | Pickup device and electronic device using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102196344A CN102196344A (en) | 2011-09-21 |
| CN102196344B true CN102196344B (en) | 2014-11-12 |
Family
ID=44603605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010126908.9A Expired - Fee Related CN102196344B (en) | 2010-03-04 | 2010-03-04 | Pickup device and electronic device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102196344B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104581584A (en) * | 2013-10-11 | 2015-04-29 | 岳凡恩 | Radio device and method for manufacturing the same |
| CN103873996A (en) * | 2014-03-27 | 2014-06-18 | 深圳市中兴移动通信有限公司 | Mobile terminal |
| CN106024035B (en) * | 2016-05-04 | 2019-06-28 | 珠海市魅族科技有限公司 | A kind of method and terminal of audio processing |
| CN112769981A (en) * | 2019-11-06 | 2021-05-07 | 北京小米移动软件有限公司 | Electronic device and audio output method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054808A (en) * | 1974-08-19 | 1977-10-18 | Matsushita Electric Industrial Co., Ltd. | Vibration detecting device having a piezoelectric ceramic plate and a method for adapting the same for use in musical instruments |
| US5885222A (en) * | 1993-08-30 | 1999-03-23 | Medacoustics, Inc. | Disposable acoustic pad sensors |
| CN2510956Y (en) * | 2001-03-20 | 2002-09-11 | 黄大伟 | Piezoelectric microphone earphone |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08195995A (en) * | 1995-01-13 | 1996-07-30 | Mitsubishi Electric Corp | Detecting element for bone-conduction voice vibration |
-
2010
- 2010-03-04 CN CN201010126908.9A patent/CN102196344B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054808A (en) * | 1974-08-19 | 1977-10-18 | Matsushita Electric Industrial Co., Ltd. | Vibration detecting device having a piezoelectric ceramic plate and a method for adapting the same for use in musical instruments |
| US5885222A (en) * | 1993-08-30 | 1999-03-23 | Medacoustics, Inc. | Disposable acoustic pad sensors |
| CN2510956Y (en) * | 2001-03-20 | 2002-09-11 | 黄大伟 | Piezoelectric microphone earphone |
Non-Patent Citations (1)
| Title |
|---|
| JP特开1996-195995A 1996.07.30 * |
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| Publication number | Publication date |
|---|---|
| CN102196344A (en) | 2011-09-21 |
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Granted publication date: 20141112 Termination date: 20150304 |
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